A lease guarantee is a promise by somebody to pay the obligations under the lease, separate from the signatory to the lease. This typically will happen where a business owner will lease premises in a shopping center. The business will sign a lease and the landlord of the shopping center will demand that the business owner himself personally sign a promise that it will pay for what’s owed in the lease in case the business doesn’t pay. Those are very risky documents to sign sometimes because sometimes the business owner many years later will sell the business and forget that it had this guarantee. If the new buyer years later breaches the lease the shopping center owner, the landlord sometimes will come after the guarantor. The business owners often have to be very careful to revoke the guarantee.